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<p>Hey all,</p>
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<p> I am using AIJ matrix to solve Laplace problem in finite element framework. To apply
<span>Neumann</span> boundary conditions I need to obtain values of first and last few columns and subtract it with the corresponding right hand side vector. I understand that <span>MatGetColumnVector and
<span>MatGetValues</span> are not collective. Is there any other alternative petsc calls to achieve this in parallel?
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<p>Thanks,<br>
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<div style="font-family:Tahoma; font-size:13px"><font face="Verdana">Sathwik <br>
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